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Temperate Viruses and Replication Strategies

15 Questions

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Temperate Viruses and Replication Strategies

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Questions and Answers

Which form of a virus lacks metabolism and the ability to reproduce independent of its host?

Virion (correct)

Intracellular replication complex

Viral genome integrated within host DNA

None of the above

What is the protein shell that surrounds the genome of a virus particle called?

Prophage

Capsid (correct)

Phospholipid bilayer

Nucleocapsid

Which of the following is NOT a characteristic of viral genomes?

Recombinant (correct)

DNA or RNA

Linear, circular, or segmented

Single- or double-stranded

According to the text, what is a virus?

A noncellular particle that infects a host cell and directs it to produce progeny particles Signup and view all the answers

According to the text, what are bacteriophages?

Viruses that infect bacteria Signup and view all the answers

According to the text, what is a provirus?

A virus that integrates its genome into that of the host Signup and view all the answers

Which of the following is a characteristic of temperate viruses?

They can enter lysogeny and establish a long-term, stable relationship with the host Signup and view all the answers

What is the function of CRISPR in bacterial defense against bacteriophage infection?

CRISPR integrates phage DNA sequences into the bacterial genome Signup and view all the answers

What is a key difference between animal viruses and bacterial viruses?

Animal viruses bind specific receptor proteins on the host cell Signup and view all the answers

Which of the following is true about the HIV life cycle in animal cells?

The viral capsid is delivered into the cytoplasm and the ssRNA genome is converted to dsDNA by the reverse transcriptase enzyme. Signup and view all the answers

Which of the following defense mechanisms has evolved in animals and plants against viruses?

Both genetic resistance and RNA interference (RNAi) Signup and view all the answers

What is the composition of an infectious viral particle (virion)?

A nucleic acid genome surrounded by a protein capsid and an envelope. Signup and view all the answers

How are viruses classified in the Baltimore system?

Based on their means of mRNA synthesis. Signup and view all the answers

What is true about the life cycles of retroviruses and pararetroviruses?

They have complex life cycles compared to other viruses. Signup and view all the answers

How are plant viruses transmitted to other cells?

Mechanically Signup and view all the answers